Checkpoint files (rct,mrt) remain behind on Hyper-V host after Hyper-V backup completes.

Symptoms

• Hyper-V backups fails to auto-merge checkpoint disk incremental files on Hyper-V host.
• Checkpoint files remain behind on Hyper-V host after backup completes but no checkpoints visible in Hyper-V manager.
• Many AVHDX files in the VM directory after backups complete .

Resolution

This behavior will be addressed in a DPX Maintenance Update. However, a complete Maintenance Update is not available at this time. A hotfix for this issue can be loaded from https://mysupport.catalogicsoftware.com/product.php/DPX470/DPX470-Hyper-V-Hotfix1.zip

This hotfix has two components a Hyper-V Agent and Master Server Appliance component. 

To apply the hotfix on Hyper-V host, complete the following steps: 

1. Extract the compressed file. 
2. Stop the Catalogic DPX Hyper-V Agent service on the Hyper-V hosts in the Windows Services Manager if its running.
3. Copy the DPX-Hyper-V-Agent-3.4.0-win-x64-installer.exe file to the Hyper-V host
4. Run the DPX-Hyper-V-Agent-3.4.0-win-x64-installer.exe and follow the steps to install the DPX Hyper-V agent. 
5. Verify the Catalogic DPX Hyper-V Agent service has correctly restart in the Windows Services Manager  
6. Repeat Steps 2-5 for every Hyper-V Host.

To apply the hotfix on the DPX Master Server appliance: 

1. Extract the compressed file. 
2. Copy the dpx-swarm-0.0.1-614.x86_64.rpm to the DPX Master Server appliance, for example using winscp. 
3. Install the rpm file by doing the following
   • Open a SSH session to the Master server using putty or a similar tool.
   • run "sudo bash"
   • run "rpm -Uvh dpx-swarm-0.0.1-614.x86_64.rpm"

Follow steps in the  Microsoft Hyper-V DPX Quick Start Guide https://mysupport.catalogicsoftware.com/product.php/DPX470/QuickStartGuide_HyperV.pdf to configure, create and run backups and recoveries.